package com.zuoyongyu;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/app_test1")
public class  AppliationTest1 extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        /**
         * 应用级设置，针对整个应用有效
         */
        ServletContext servletContext = req.getServletContext();
        servletContext.setAttribute("uname", "a_test");
    }
}
